DiAmonD是:()。
A.自然元素矿物
B.可以是水热法合成的
C.与石墨是类质同像
D.有六方晶系2H型的多型变体称为六方金刚石
A.自然元素矿物
B.可以是水热法合成的
C.与石墨是类质同像
D.有六方晶系2H型的多型变体称为六方金刚石
生产进度图采用图板方式,原则按自然分层绘制。除地质构造不绘外,其余均按基本矿图中()的要求绘制。
A.地质综合平面图
B.钻孔柱状图
C.采掘工程平面图
A vessel servicing a pipeline during the day shall display ______.
A.three black shapes in a vertical line; the highest and lowest are balls,and the middle one is a diamond
B.three shapes in a vertical line; the highest and lowest are red balls,and the middle one is a white diamond
C.three black balls in a vertical line
D.two black balls in a vertical line
Jenkins was a jeweller, who had made a large diamond (钻石) ring worth £57,000 for the Silkstone Jewellery Shop. When it was ready, he made a copy of it which looked【21】like the first one but was worth only £2,000. This he took to the shop, which【22】it without a question.
Jenkins gave the much more【23】ring to his wife for her fortieth birthday. Then ,the husband and wife【24】to Paris for a weekend. As to the【25】ring, the shop sold it for £60,000.
Six months later the buyer【26】it back to Silkstone's office. "It's a faulty (有瑕疵的)diamond," he said. "It isn't worth the high【27】paid. "Then he told them the【28】. His wife's car had caught fire in an【29】. She had escaped (幸免),【30】the ring had fallen off and been damaged (损坏) in the great【31】of the fire.
The shop had to【32】. They knew that no fire on earth can【33】damage a perfect diamond. Someone had taken the【34】diamond and put a faulty one in its place. The question was: who【35】it?
A picture of the ring appeared in the【36】. A reader thought he【37】the ring. The next day, another picture appeared in the papers which【38】a famous dancer walking out to a plane for Paris. Behind the dancer there was a woman【39】a large diamond ring," Do you know the【40】with the lovely diamond ring?" the papers asked their readers. Several months later ,Jenkins was sentenced to seven years in prison.
(41)
A.only
B.surely
C.nearly
D.exactly
绘制矿图的五要素是比例尺、坐标系统、高程、标高投影和()。
A.图标
B.图例
C.指北针
D.三棱
植物吸收矿质量与吸水量之间的关系是()
A.既有关,又不完全一样
B.直线正相关关系
C.两者完全无关
D.两者呈负相关关系